Problem is it's $1000 entry - though that all goes to the charity for that trip.
Might be good to have a group of subarus show up all the pajeros and such!
They seem to usually go out in Victoria, but there is mention of a simpson desert trip on the website, too.
I won't be able to make it, but I thought I'd mention it as an idea for next year.

Website is here: http://www.drive4life.com.au/